CustomEnum: Release infinite recursion (#11)

Currently, an issue occurs if you pass i.e. Matrix(-1). It will continually call `cls(value)`, which in turn calls `cls.from_param`, which eventually circles back to `_missing_`.

This at least puts a stopgap to this issue and properly raises the error, although I'm sure there's a better solution that fundamentally deals with the problem.

stgpytools/enums/base.py

@@ -46,19 +46,20 @@ def from_param(cls: type[SelfEnum], value: Any, func_except: FuncExceptT | None
 
         try:
             return cls(value)
-        except ValueError:
-            ...
+        except Exception:
+            pass
 
         if isinstance(func_except, tuple):
             func_name, var_name = func_except
         else:
-            func_name, var_name = func_except, ''
+            func_name, var_name = func_except, cls
 
         raise NotFoundEnumValue(
-            'Value for "{var_name}" argument must be a valid {enum_name}.\n'
-            'It can be a value in [{readable_enum}].', func_name,
-            var_name=var_name, enum_name=cls,
-            readable_enum=iter([f'{x.name} ({x.value})' for x in cls])
+            'The given value for "{var_name}" argument must be a valid {enum_name}, not "{value}"!\n'
+            'Valid values are: [{readable_enum}].', func_name,
+            var_name=var_name, enum_name=cls, value=value,
+            readable_enum=iter([f'{x.name} ({x.value})' for x in cls]),
+            reason=value
         )